Norman, P., Chandran, M. and Dhandapani, T. (2016) “Prevalence of hearing impairment in school children (aged 8-14 years) in the villages of Vadamavanthal, Tamil Nadu, India”, International Journal Of Community Medicine And Public Health, 3(12), pp. 3369–3373. doi: 10.18203/2394-6040.ijcmph20164257.